METHOD AND DEVICE FOR FORMING MERGE CANDIDATE LIST

摘要

A picture decoding method performed by a decoding device according to an embodiment of the present disclosure comprises the steps of: when a merge mode is applied to a current block, deriving merge candidates on the basis of at least one temporal neighboring block and at least one spatial neighboring block of the current block; when the number of the derived merge candidates is less than the maximum number of merge candidates, deriving a CPR merge candidate referring to a reference block within a current picture including the current block; forming a merge candidate list on the basis of the merge candidates and the CPR merge candidates; deriving prediction samples for the current block on the basis of the formed merge candidate list; and generating reconstruction samples for the current block on the basis of the prediction samples.